Origin of the resistivity anisotropy in the nematic phase of FeSe
Journal Article
·
· Physical Review Letters
- Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States)
- Ames Lab., Ames, IA (United States)
- Univ. of Minnesota, Minneapolis, MN (United States)
The in-plane resistivity anisotropy is studied in strain-detwinned single crystals of FeSe. In contrast to other iron-based superconductors, FeSe does not develop long-range magnetic order below the tetragonal-to-orthorhombic transition at Ts ≈ 90 K. This allows for the disentanglement of the contributions to the resistivity anisotropy due to nematic and magnetic orders. Comparing direct transport and elastoresistivity measurements, we extract the intrinsic resistivity anisotropy of strain-free samples. The anisotropy peaks slightly below Ts and decreases to nearly zero on cooling down to the superconducting transition. Furthermore, this behavior is consistent with a scenario in which the in-plane resistivity anisotropy is dominated by inelastic scattering by anisotropic spin fluctuations.
- Research Organization:
- Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Grant/Contract Number:
- AC02-06CH11357; AC02-07CH11358; SC0012336
- OSTI ID:
- 1337676
- Alternate ID(s):
- OSTI ID: 1325293
- Report Number(s):
- IS-J--8944
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 12 Vol. 117; ISSN 0031-9007; ISSN PRLTAO
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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